18495 has 16 divisors (see below), whose sum is σ = 33120. Its totient is φ = 9792.

The previous prime is 18493. The next prime is 18503. The reversal of 18495 is 59481.

18495 = 2³ + 3³ + ... + 16³.

It is a Cunningham number, because it is equal to 136²-1.

It is not a de Polignac number, because 18495 - 2¹ = 18493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

18495 is a lucky number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67 + ... + 203.

It is an arithmetic number, because the mean of its divisors is an integer number (2070).

2¹⁸⁴⁹⁵ is an apocalyptic number.

18495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18495 is a deficient number, since it is larger than the sum of its proper divisors (14625).

18495 is a wasteful number, since it uses less digits than its factorization.

18495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 145 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 18495 is about 135.9963234797. The cubic root of 18495 is about 26.4454794585.

The spelling of 18495 in words is "eighteen thousand, four hundred ninety-five".